Re-generate gnulib import

Re-generate gnulib import

I noticed that re-generating our gnulib import introduced some changes.
I supposed that this comes from the recent upgrade to autoconf 2.69
(though I haven't checked).

Tested by rebuilding on GNU/Linux x86-64 and mingw (cross-compiled from
GNU/Linux).

gdb/ChangeLog:

	* gnulib/aclocal.m4: Re-generate.
	* gnulib/config.in: Re-generate.
	* gnulib/configure: Re-generate.
	* gnulib/import/Makefile.in: Re-generate.
	* gnulib/import/m4/gnulib-comp.m4: Re-generate.
	* gnulib/import/m4/onceonly.m4: Re-generate.